DE102018127124A1 - Mobile harbor crane with an improved energy supply system - Google Patents

Abstract

The invention relates to a mobile harbor crane (1) with an undercarriage (2) and a chassis (6) attached to it, with a support device (8), an uppercarriage (3) and a slewing gear (3) connecting the superstructure (3) with the undercarriage (2). d), a jib (5), a luffing mechanism (w) connecting the jib (5) to the superstructure (3), and a lifting mechanism (h), the mobile harbor crane (1) having an on-board energy supply system (11) for supplying drives of the undercarriage (6), the support device (8), the slewing gear (d), the luffing gear (w) and the lifting gear (h) with electrical energy, the drives in normal operation of the mobile harbor crane (1) with the required electrical energy are supplied by a primary energy source (13, 14), the electrical energy being transmitted via an on-board crane power network (12) present in the on-board energy supply system (11) n, it is proposed that the on-board energy supply system (11) for an auxiliary operation and / or an emergency operation I and / or an emergency operation II of the mobile harbor crane has a long-term energy store (15) in order to be used in auxiliary operation and / or in emergency operation I and / or in emergency operation II to supply at least some of the drives from the energy consumer system (20) via the on-board crane power network (12) with the long-term energy store (15) instead of the primary energy source (13, 14) with the required electrical energy.

Description

The invention relates to a mobile harbor crane according to the preamble of claim 1.

Such a mobile harbor crane is from the WO 2011/098542 A1 known.

From the patent US 7,554,278 B2 a hybrid drive system of a mobile crane is known which has a diesel-electric drive and a battery unit serving as an energy storage system, which together can supply a lifting motor with electrical energy.

Furthermore, the Konecranes Global Corporation company brochure entitled “Diesel-Electric Model 4th Mobile Harbor Cranes ”are known as so-called mobile harbor cranes with which containers or bulk goods are handled in seaports or container terminals. Such a mobile harbor crane essentially consists of an undercarriage with which the mobile harbor crane is supported on land, for example a quay, or on a floating pontoon, and an uppercarriage which is rotatably mounted on the undercarriage about a vertical axis. The undercarriage can be moved by tires on the quay or by rail wheels on rails. During handling operations, the undercarriage is supported on supports. A tower extending vertically, a slewing gear for rotating the uppercarriage, a hoist for lifting a load and a counterweight are arranged on the superstructure. Furthermore, a boom is articulated on the tower, approximately in the region of its half length and on the side facing away from the counterweight. The boom is pivotally connected to the tower about a horizontal luffing axis and can additionally be pivoted from its laterally cantilevered operating position into an upright rest position via a luffing cylinder articulated on the boom and at the bottom of the superstructure. In addition, the boom is designed in the usual way as a lattice mast.

Mobile harbor cranes of this type have an energy supply system which is supplied with electrical energy for normal operation of the mobile harbor crane by at least one primary energy source for supplying drives in order to supply the hydraulic pumps or electric motors of the respective drives for the respective main crane functions. Primary energy sources are, for example, a stationary port electricity network, via which external electricity is fed into the energy supply system, or an on-board diesel-electric drive or a diesel-hydraulic drive. The disadvantage here is that if the respective primary energy source fails, the operation of the mobile harbor crane must be interrupted. Even if a mobile harbor crane is equipped with an external power supply and a diesel-electric drive, a port-side power interruption and a simultaneous failure of the diesel engine can still mean that crane operation has to be interrupted and that there is no emergency function for driving, steering, supporting, lifting, lowering , Rocking and turning there.

Starting from this prior art, the present invention is based on the object of creating a mobile harbor crane with an improved energy supply system.

This object is achieved by a mobile harbor crane with the features of claim 1. Advantageous refinements of the invention are specified in the dependent claims 2 to 10 and the following description.

According to the invention, in a mobile harbor crane, which is intended in particular for the handling of containers or bulk goods in seaports or container terminals, with an undercarriage and an undercarriage attached to it, which can be moved in particular by means of tires on a quay or by rail wheels on rails, with one Support device for supporting the mobile harbor crane, in particular in handling operations, an uppercarriage, in particular with a tower extending in the vertical direction and / or a counterweight, a slewing gear connecting the uppercarriage with the undercarriage, a boom, in particular designed as a lattice boom, and one with the superstructure connecting luffing gear, and a hoist, wherein the mobile harbor crane has an on-board energy supply system for supplying drives of the undercarriage, the support device, the slewing gear, the luffing gear and the hoist with electrical energy, the drives in normal operation d There mobile harbor cranes are supplied with the required electrical energy from a primary energy source, the electrical energy being transmitted via an on-board crane power network present in the on-board energy supply system, an improved energy supply system of the mobile harbor crane is created in that the on-board energy supply system for an auxiliary operation and / or an emergency operation I and / or an emergency operation II of the mobile harbor crane has a long-term energy store in order to provide at least some of the drives in the auxiliary operation and / or in emergency operation I and / or in emergency operation II via the on-board crane power network through the long-term energy store instead of the primary energy source with the required electrical energy to supply.

In other words, according to the invention, it becomes an on-board energy supply system installed, which as redundancy to the primary energy source for an auxiliary operation and / or an emergency operation I and / or an emergency operation II has a long-term energy storage connected to the on-board crane power network, which in auxiliary operation and / or in emergency operation I and / or in emergency operation II instead of Primary energy source supplies at least some of the drives with electrical energy. By using the long-term energy store, downtimes of the mobile harbor crane due to a lack of energy supply from the primary energy source used in normal operation to supply the drives are minimized, since their failure can be at least partially compensated for by the long-term energy store. In addition, purely electrical operation of the mobile harbor crane in port areas is made possible without access to an external primary energy source.

The on-board energy supply system according to the invention comprises at least one long-term energy store, an on-board crane power network and the drives of the undercarriage, the support device, the slewing gear, the luffing gear and the lifting gear. The drives are part of an energy consumer system and can in particular have at least one electric motor and / or at least one hydraulic pump.

The primary energy source supplies the drives used with electrical energy via the on-board crane power network. In addition, the long-term energy storage can also be charged via the primary energy source. The primary energy source can be an on-board and / or an external primary energy source. In this context, the on-board primary energy source is a primary energy source carried by the mobile harbor crane and connected to the on-board crane power network and thus provided in the on-board energy supply system. The on-board primary energy source can in particular be designed in the form of a diesel-electric drive, which essentially comprises a diesel engine and a generator for converting the mechanical energy generated by the diesel engine into electrical energy. In this context, the external primary energy source is a primary energy source that can be connected to the on-board crane power network for external supply of electrical energy outside the mobile harbor crane. The external primary energy source can in particular be a stationary primary energy source, such as a port power grid. Depending on the design, the connection for the external primary energy source to the on-board crane power network can be used, for example, to establish a plug-in connection and / or a cable connection with a cable drum to the external primary energy source.

The long-term energy storage is part of the on-board energy supply system and can store energy from the at least one primary energy source, which is not required for the energy supply of the drives, as well as energy from a regenerative system from a generator operation of the at least one drive used and, if necessary, to supply energy to the at least one deliver a used drive. The long-term energy store is designed and set up in such a way that, in auxiliary operation and / or in emergency mode I, the long-term energy store ensures the energy supply to the drives of the undercarriage, the support device, the slewing gear, the luffing gear and the hoist so that at least the crane Main functions of driving and steering the undercarriage, supporting the support device, rotating the slewing gear, rocking the seesaw and lifting and lowering the hoist can be used, and in emergency mode II by means of the long-term energy store at least the energy supply for the drive of the undercarriage and / or the drive for the hoist is ensured so that at least the main crane functions driving and steering the undercarriage and / or lowering the hoist can be used, in particular a load can be deposited in a controlled manner and / or the mobile harbor crane can be moved out of the work area and / or danger area. In an advantageous embodiment, at least one rechargeable battery, preferably a Li-ion battery, is used as the long-term energy store.

The on-board crane power network is part of the on-board energy supply system and connects, via its electrical connections, the at least one primary energy source with the energy consumer system or its drive (s), the at least one primary energy source with the long-term energy store and the long-term energy store with the energy consumer system or the at least one used drive. In addition, the on-board crane power network includes a control system that controls and regulates the current flows between the aforementioned components via the electrical connections. It can be provided that current can flow in both directions only between the long-term energy store and the energy consumer system, in particular its at least one drive used, so that, in particular, feedback from a generator operation of the respective drive, for example the drive of the hoist when lowering a load that can be used to charge the long-term energy storage. However, it is also possible for a current to flow back to the external primary energy source in the course of feedback between the energy consumer system or its drive (s) and the external primary energy source.

A normal operation of the mobile harbor crane is a crane operation with the intended energy supply for the mobile harbor crane, the energy supply of all drives being ensured by the intended on-board and / or external primary energy source. In normal operation, all functions of the mobile harbor crane can be used and a superimposition of these functions and the corresponding movements of the associated drives is possible.

Auxiliary operation of the mobile harbor crane is a crane operation with the intended power supply for the mobile harbor crane, at least the energy supply for the drives of the undercarriage, the support device, the slewing gear, the luffing gear and the hoist is ensured by the long-term energy store provided according to the invention. In auxiliary operation, at least the main crane functions of driving and steering the undercarriage, supporting the support device, rotating the slewing gear, rocking the luffing gear and lifting and lowering the lifting gear can be used. However, as a restriction compared to normal operation, it can be provided that some functions, for example the functions lifting, lowering, rocking and / or rotating, can only be used in single mode. In individual mode, these functions and the corresponding movements of the associated drives are not intended to be superimposed. In principle, however, these functions can be overlaid. The auxiliary operation is used in the event of intended interruptions, in particular decoupling, from the supply of the external primary energy source used in normal operation, for example when the mobile harbor crane is used in the meantime in a port area without access to the port power grid. In addition, the auxiliary operation is used in the event of intended interruptions from the energy supply to the on-board primary energy source used in normal operation, for example when the mobile harbor crane is now used in a port area in which the operation of a diesel-electric drive is not desired or not permitted and the diesel engine is therefore planned to be switched off . This can be the case in port areas with appropriate environmental and / or occupational safety regulations. The planned interruption can then be initiated by the crane operator, for example. However, the auxiliary mode can only be used when the charge level of the long-term energy store is above a predetermined lower charge threshold. When the specified lower charge threshold is reached and if no on-board primary energy source is available, a switchover to emergency operation II, described in more detail below, is automatically effected.

Emergency operation I of the mobile harbor crane is a crane operation with a non-intended power supply for the mobile harbor crane, the energy supply for the drives of the undercarriage, the support device, the slewing gear, the luffing gear and the lifting gear being ensured by the long-term energy store provided according to the invention. In emergency operation I, at least the main crane functions driving and steering the undercarriage, supporting the support device, rotating the slewing gear, rocking the luffing gear and / or lifting and lowering the lifting gear can be used. However, as a restriction compared to normal operation, it can be provided that some functions, for example the functions lifting, lowering, rocking and / or rotating, can only be used in single mode. In single mode there is an overlay of these functions and corresponding movements of the associated drives are not provided. In principle, however, these functions can be overlaid. Emergency operation I is used in the event of failure of all primary energy sources used in normal operation and a charge level in the long-term energy store that is above a predetermined lower charge threshold. When the specified lower charge threshold is reached, a switchover to emergency mode II described below is automatically effected. The emergency operation I differs from the auxiliary operation essentially in that the energy supply of the drives provided in the normal operation is planned in the auxiliary operation and is interrupted unplanned in the emergency operation I. In contrast to a change from normal operation to auxiliary operation, there is no need for a crane operator to initiate this, but only the unplanned interruption of the power supply to the drives that was previously provided by the primary energy source, for example due to a power failure in the port power grid.

Emergency operation II of the mobile harbor crane is a crane operation with an improper energy supply for the mobile harbor crane, at least the energy supply for the drive of the undercarriage and / or the drive of the hoist is ensured by the long-term energy store provided for this purpose according to the invention. In emergency operation II, at least the main crane functions driving and steering the chassis and / or lowering the hoist can be used. It is particularly advantageously provided that in emergency operation II at least one load can be deposited in a controlled manner and / or the mobile harbor crane can be moved out of the work area and / or danger area. However, as a restriction compared to the aforementioned operating modes, it is provided that the main crane functions of driving and steering the undercarriage and / or lowering the hoist can only be used in single mode. In individual mode, these functions and the corresponding movements of the associated drives are not provided and are not possible. Emergency mode II is used in the event of failure of all primary energy sources used in normal operation and a charge level in the long-term energy store that corresponds to or is below the specified lower charge threshold. In emergency operation II, the interruption of all primary energy sources used in normal operation for the energy supply of the drives, as in emergency operation I, is unplanned.

In an advantageous embodiment, it is provided that the on-board energy supply system of the mobile harbor crane, in particular its on-board crane power network, also comprises a control and regulation system, which in particular has a control unit and a control unit, which provides the energy source for supplying energy to the drives in normal operation, auxiliary operation, emergency operation I and emergency operation II respectively specifies and / or permits. The control and regulation system advantageously has a management system for the long-term energy store. In normal operation, the control system regulates the energy supply of all drives to the primary energy source provided for this purpose. In the auxiliary mode, the control and regulation system allows the drives of the undercarriage, the support device, the slewing gear, the luffing gear and the lifting gear to be supplied solely with electrical energy by the long-term energy store. If a diesel-electric drive is used as the primary energy source, the control and regulation system can alternatively be designed in such a way that when the charge level of the long-term energy storage device is predefined, the system automatically switches from normal operation to auxiliary operation. This means that the drives of the undercarriage, the support device, the slewing gear, the luffing gear and the hoist are only supplied with power to the long-term energy storage system, in particular to optimize the overall efficiency of the energy supply system by avoiding unnecessary energy conversions and at the same time to reduce the CO ₂ emissions decrease locally. In emergency operation I, the control and regulation system assigns the long-term energy store to the drives of the undercarriage, the support device, the slewing gear, the luffing gear and the hoist unit alone. In auxiliary operation and / or in emergency operation I, the control and regulating system, in particular the management system contained therein for the long-term energy store, only allows the long-term energy store to be discharged up to a predefined lower charge threshold, in particular in order to ensure that in a possible emergency operation II to be able to provide the required energy. In emergency operation II, the control system regulates the energy supply of the drive of the undercarriage and / or the drive of the hoist with electrical energy to the long-term energy store and preferably limits it to this. In emergency operation II, the control and regulating system, in particular the management system for the long-term energy storage contained therein, allows a discharge even below the predetermined lower charge threshold. The open-loop and closed-loop control system is also designed in such a way that the port mobile crane can continue its normal operation if the long-term energy store fails, provided the primary energy source required for supplying the drives with energy is available.

It is provided in a structurally simple manner that the long-term energy store is charged via the on-board crane power network by the primary energy source used in normal operation. In addition, feedback from generator operation of the energy consumer system or at least one drive thereof, for example the drive of the hoist when lowering a load, can also be used to charge the long-term energy store. A gentle charging of the long-term energy storage device can advantageously be achieved in that the control and regulation system, in particular the management system for the long-term energy storage device contained therein, preferably only allows charging of the long-term energy storage device up to a predetermined upper charge threshold, in particular to avoid overloading the long-term energy storage. If, after reaching the upper charge threshold, further energy is available from generator operation of the at least one drive used, it can be provided that an existing primary energy source is fed back into the external primary energy source. In this case, a current flow in both directions is possible between the energy consumer system or its drive (s) used and the external primary energy source.

It is also of particular advantage that, in the case of the desired modular construction of the necessary assemblies and functionalities, the long-term energy storage as well as the control and regulation system, in particular the management system for the long-term energy storage contained therein, can also be retrofitted as an extension to existing mobile harbor cranes.

In a preferred first embodiment of the mobile harbor crane, it is provided that the primary energy source used in normal operation is an external primary energy source, in particular a port electricity network. The mobile harbor crane has no additional primary energy source and therefore in particular no on-board primary energy source. As soon and as long as the external primary energy source for Power supply to the drives is available and accordingly the mobile harbor crane can be operated in normal operation, the control and regulation system specifies the use of this energy source. For this purpose, for example, a signal can be sent from the control unit to the control unit, which activates the electrical connection for connecting the external primary energy source. In auxiliary operation or in emergency operation I or in emergency operation II, the long-term energy store takes over the energy supply of at least some of the drives according to the criteria described above for the respective operation. The long-term energy storage unit is charged during normal operation via the on-board crane electricity network by the external primary energy source or by means of a feedback from one or more of the drives. A main advantage of this embodiment is that the possible emergency operation I and / or emergency operation II minimizes downtimes of the mobile harbor crane that would otherwise occur if the only primary energy source provided failed, and that auxiliary operation is possible by means of the long-term energy store, for example when used of the mobile harbor crane in a port area without access to the port electricity network. This advantageously makes it possible to dispense entirely with the installation of a diesel-electric drive for supplying the energy consumer system or the associated drives. Further advantages of this embodiment are thus the avoidance of local CO ₂ emissions and thus a significant improvement in the ecological footprint of the port, the saving of fuel and other engine resources as well as the avoidance of maintenance times on the otherwise required diesel engine.

In an alternative second embodiment of the mobile harbor crane, it is provided that the primary energy source used in normal operation is an on-board primary energy source, in particular a diesel-electric drive. As soon as and as long as this primary energy source is available for supplying power to the drives and the mobile harbor crane can accordingly be operated in normal operation, the control and regulation system specifies the use of this energy source. Accordingly, the mobile harbor crane does not require a connection for an external primary energy source and can therefore be operated in normal operation, for example, independently of a harbor power grid. In auxiliary operation or in emergency operation I or in emergency operation II, the long-term energy store takes over the supply of at least some of the drives according to the criteria described above for the respective operation. The long-term energy storage device is charged during normal operation via the on-board crane power network, through the on-board primary energy source, or by means of feedback from one or more of the drives. A main advantage of this embodiment is that the possible emergency operation I and / or emergency operation II minimizes downtimes of the mobile harbor crane that would otherwise occur if the only primary energy source provided failed, and that auxiliary operation is possible by means of the long-term energy store, for example when used of the mobile harbor crane in a port area in which the operation of a diesel-electric drive is not desired or not permitted.

In an alternative third embodiment of the mobile harbor crane, it is provided that the primary energy source used in normal operation comprises a first, external primary energy source, in particular a port power network, and a second, on-board primary energy source, in particular a diesel-electric drive. It is particularly advantageously provided that as soon as and as long as the external primary energy source is available and the mobile harbor crane can accordingly be operated in normal operation, the control and regulation system specifies the use of this energy source. If this energy source is not available, the open-loop and closed-loop control system specifies the use of the on-board primary energy source for the energy supply of the drives, whereby the mobile harbor crane can also be operated here in normal operation. In auxiliary operation, the control and regulation system allows the drives to be supplied with energy both by the on-board primary energy source and by the long-term energy store. If the charge level of the long-term energy store is not sufficient, in particular a charge level that corresponds to or is below the predetermined lower charge threshold, the control and regulation system specifies the on-board primary energy source for the energy supply to the drives. The open-loop and closed-loop control system can also be designed so that, as long as and as long as the port mobile crane is in a port area in which the operation of a diesel-electric drive is not desired or not permitted, and the charge level of the long-term energy store for the Energy supply of at least some of the drives is sufficient, the energy supply of the drives automatically by the long-term energy storage. Alternatively, the specification can also be made manually by the crane operator. If one of the two primary energy sources fails, the other primary energy source can be used to supply the drives with energy, thereby ensuring normal operation of the mobile harbor crane. In the event of failure of the first, external primary energy source and the second, on-board primary energy source, the long-term energy store in emergency mode I or in emergency mode II takes over the necessary energy supply for at least some of the drives according to the criteria described above for the respective operation. The long-term energy storage unit is charged via the on-board crane electricity network by the external one Primary energy source or the on-board primary energy source or by a feedback from one or more of the drives. A main advantage of this embodiment is that the possible emergency operation I and / or emergency operation II minimizes downtimes of the mobile harbor crane, which would otherwise occur if both primary energy sources failed, and that auxiliary operation is possible by means of the long-term energy store, for example when using the mobile harbor crane in a port area without access to the port electricity network and when using the mobile harbor crane in a port area in which the operation of a diesel-electric drive is not desired or not permitted. The second on-board primary energy source can advantageously be dispensed with in the long term, for example to convert a mobile harbor crane according to the third embodiment to a mobile harbor crane according to the previously described first embodiment by subsequently removing it.

• 1 eine Ansicht eines Hafenmobilkrans,
• 2 eine schematische Darstellung des bordeigenen Energieversorgungssystems des Hafenmobilkrans nach 1 zusammen mit einer externen Primärenergiequelle,
• 3 eine schematische Darstellung des bordeigenen Energieversorgungssystems des Hafenmobilkrans nach 1, welches eine bordeigene Primärenergiequelle umfasst und
• 4 eine schematische Darstellung des bordeigenen Energieversorgungssystems des Hafenmobilkrans nach 1, welches eine bordeigene Primärenergiequelle umfasst, zusammen mit einer externen Primärenergiequelle.

The three exemplary embodiments of the invention are explained below with reference to drawings. It shows:

• 1 a view of a mobile harbor crane,
• 2nd a schematic representation of the on-board energy supply system of the mobile harbor crane after 1 together with an external primary energy source,
• 3rd a schematic representation of the on-board energy supply system of the mobile harbor crane after 1 , which includes an onboard primary energy source and
• 4th a schematic representation of the on-board energy supply system of the mobile harbor crane after 1 , which comprises an on-board primary energy source, together with an external primary energy source.

The 1 shows a view of a mobile harbor crane 1 for handling standardized containers, in particular ISO containers, between land and water or vice versa or within container terminals. The mobile harbor crane can also 1 can be equipped with a gripper for handling bulk goods. The mobile harbor crane 1 consists essentially of an undercarriage 2nd and an uppercarriage 3rd with a tower 4th and an outrigger 5 . In the usual way, the mobile harbor crane 1 over his undercarriage 2nd in the country, here a quay 7 , supported. Over the undercarriage 2nd with the chassis 6 , in particular a wheel tire undercarriage, is the mobile harbor crane 1 on the quay 7 moveable and becomes during the handling operation over a support device 8th , in particular their supports, supported on this. It is also possible that the mobile harbor crane 1 movable on rails or fixed on a floating pontoon. On the undercarriage 2nd is the uppercarriage 3rd stored by a slewing gear d about a vertical axis of rotation D and especially relative to the undercarriage 2nd is pivotable. The slewing gear d usually has a slewing ring in engagement with a drive gear. The uppercarriage 3rd also carries a hoist H and a counterweight in the rear area 9 . Also on the uppercarriage 3rd the tower extending vertically 4th supported, at the top of a roller head 10th is attached with pulleys. Furthermore is on the tower 4th , around half its length and on the counterweight 9 opposite side, the boom 5 articulated. The boom 5 is about a horizontal rocking axis W swiveling with the tower 4th connected and additionally via a on the boom 5 and down on the uppercarriage 3rd articulated luffing gear w , which is usually designed as a hydraulic cylinder, pivotable from its laterally projecting operating position into an upright rest position. In addition, the boom 5 formed in the usual way as a lattice tower. At the the tower 4th opposite tip of the boom 5 are additional pulleys rotatably mounted, starting from the hoist H Lifting ropes over the roller head 10th are led to the load to be lifted.

The 2nd shows a schematic representation of the on-board energy supply system 11 of the mobile harbor crane 1 according to the first embodiment described above. The energy supply system 11 includes an on-board crane power network 12th , a long-term energy storage 15 as well as an energy consumer system 20th . It is also an external primary energy source 13 shown, which in particular can be a stationary primary energy source outside the mobile harbor crane, such as a port power grid, and for external supply of electrical energy via a connection 16 to the on-board crane power network 12th connected. The connection 16 for the external primary energy source 13 is designed in such a way that a plug connection and / or a cable connection with a cable drum can be established with the external primary energy source 13. The on-board crane power network 12th then connects via its electrical connections 19th one in the crane power network 12th included control and regulation system 17th with the external primary energy source 13 , an energy consumer system 20th which drives the undercarriage 6 , the support device 8th , the slewing gear d , the seesaw w and the hoist H includes, and the long-term energy storage 15 .

The control and regulation system 17th which is a control unit 17a and a control unit 17b includes, controls and regulates the electrical connections 19th current flows. For this purpose, signals are sent via the signal connections 18th from the control unit 17a to the control unit 17b , the long-term energy storage 15 and the energy consumer system 20th sent. The direction of the current flows is shown by the arrow on the electrical connections 19th indicated. Accordingly, about the electrical connections 19th between the long-term energy storage 15 and the energy consumer system 20th , especially through the control system 17th , A current flow in both directions possible, so that in particular a feedback from a generator operation of the at least one drive used in the energy consumer system 20th , for example the drive of the hoist H when lowering a load, to charge the long-term energy storage 15 can be used. Via the electrical connection 19th and the connection 16 can between the on-board crane power network 12th and the external primary energy source 13 also a regeneration as a result of generator operation of the at least one drive used from the energy consumer system 20th take place, especially if and as long as the upper charge threshold of the long-term energy storage 15 is reached.

The external primary energy source 13 supplies with the mobile harbor crane 1 according to the first embodiment via the on-board crane power network 12th the energy consumer system 20th as well as the long-term energy storage 15 to charge it with electrical energy. As soon and as long as the external primary energy source 13 to supply the energy consumer system 20th available and accordingly the mobile harbor crane 1 The control and regulation system is operable in normal operation 17th the use of the external primary energy source 13 in front. For this, the control unit sends 17a over the signal connection 18th a signal to the control unit 17b which is the electrical connection 19th for connection 16 the external primary energy source 13 activated, as well as to the energy consumer system 20th . This becomes the energy supply for the energy consumer system 20th a current flow between the external primary energy source 13 and the energy consumer system 20th , especially through the control system 17th , causes. All functions of the mobile harbor crane are in normal operation 1 usable and a superposition of these functions and the corresponding movements of the associated drives of the energy consumer system 20th possible. If provided energy from the external primary energy source 13 not for the supply of the energy consumer system 20th is used, this can be used to charge the long-term energy storage device described in more detail below 15 be used.

In the event of planned interruptions, in particular decoupling, from the supply of the external primary energy source used in normal operation 13 , for example when using the mobile harbor crane in the meantime 1 in a port area without access to the port power grid and a charge level of the long-term energy storage 15 , which is above a predetermined lower charge threshold, the auxiliary mode is applied. The planned interruption can, for example, be arranged by the crane operator. The control and regulation system leaves in auxiliary operation 17th an exclusive supply of the drives of the energy consumer system 20th with electrical energy through the long-term energy storage 15 to.

In the case of unplanned interruptions, in particular due to a failure, from the energy supply of the external primary energy source used in normal operation 13 , for example in the event of a power failure in the port power grid, and a charge level in the long-term energy storage device 15 , which is above a predetermined lower charge threshold, emergency operation I is applied. In contrast to a change from normal operation to auxiliary operation, no need for a crane operator is required. In emergency mode I, the control and regulation system 17th an exclusive supply of the drives of the energy consumer system 20th with long-term energy storage with electrical energy 15 to.

To the long-term energy storage 15 for the supply of the aforementioned drives of the energy consumer system 20th to use in auxiliary operation and emergency operation I, sends the control unit 17a one signal each via the corresponding signal connections 18th between control unit 17a and long-term energy storage 15 , between control unit 17a and control unit 17b and between the control unit 17a and energy consumer system 20th . This becomes the energy supply for the energy consumer system 20th a current flow between the long-term energy storage 15 and the energy consumer system 20th , especially through the control system 17th , causes. The long-term energy storage 15 is thus designed and set up such that in auxiliary operation and emergency operation I by means of the long-term energy store 15 thus the energy supply for the drives of the energy consumer system 20th is ensured. At least the main crane functions are driving and steering the undercarriage 6 , Supporting the support device 8th , Turning the slewing gear d , Seesawing the seesaw w and lifting and lowering the hoist H usable. However, as a restriction compared to normal operation, it can be provided that some functions, for example the functions lifting, lowering, rocking and / or rotating, can only be used in single mode. In individual mode, these functions and the corresponding movements of the associated drives are not intended to be superimposed. There is an overlay of these functions however possible in principle. When the specified lower charge threshold of the long-term energy storage device is reached 15 the system automatically switches over to emergency mode II described in more detail below.

In the event of interruptions in the supply of the external primary energy source used in normal operation 13 and a charge level of the long-term energy store 15 which corresponds to or is below the specified lower charge threshold, emergency operation II is used. In emergency mode II, the control and regulation system has 17th the supply of the drive of the chassis 6 and / or the drive of the hoist H with long-term energy storage with electrical energy 15 to and preferably limits this to. For this, the control unit sends 17a one signal each via the corresponding signal connections 18th between control unit 17a and long-term energy storage 15 , between control unit 17a and control unit 17b and between the control unit 17a and drive the chassis 6 and / or drive the hoist H . This will power the chassis drive 6 and / or the drive of the hoist H a current flow between the long-term energy storage 15 and the drive of the chassis 6 and / or drive the hoist H causes. Current can flow through the electrical connections 19th , especially through the control system 17th , respectively. The long-term energy storage 15 is thus designed and set up in such a way that in emergency mode II by means of the long-term energy store 15 So at least the energy supply for the drive of the chassis 6 and / or the drive of the hoist H is ensured. At least the main crane functions are driving and steering the undercarriage 6 and / or lowering the hoist H usable, whereby in particular a load can be deposited in a controlled manner and / or the mobile harbor crane can be moved out of the work area and / or danger area. However, as a limitation compared to the aforementioned operating modes, the main crane functions are driving and steering the undercarriage 6 and / or lowering the hoist H can only be used in single mode. In individual mode, these functions and the corresponding movements of the associated drives are not provided and are not possible.

The charge of the long-term energy storage 15 takes place during normal operation via the on-board crane power network 12th through the external primary energy source 13 . For this, the control unit sends 17a a signal via the corresponding signal connections 18th between control unit 17a and control unit 17b and between the control unit 17a and long-term energy storage 15 . This will cause a current to flow across the electrical connections 19th from the external primary energy source 13 for long-term energy storage 15 , especially through the control system 17th , to whose charge. In addition, feedback from a generator operation of the at least one drive, for example the drive of the hoist, can also be performed H when lowering a load, to charge the long-term energy storage 15 be used. For this, the control unit sends 17a a corresponding signal via the signal connections 18th between control unit 17a and control unit 17b , between control unit 17a and energy consumer system 20th and between the control unit 17a and long-term energy storage 15 . This results in a current flow from the energy consumer system 20th for long-term energy storage 15 , especially through the control system 17th , to whose charge. A gentle charge of the long-term energy storage 15 is advantageously increased in that the control and regulation system 17th , in particular the management system for long-term energy storage contained therein 15 , preferably a charge of the long-term energy storage when charging 15 only allows up to a predetermined upper charge threshold, in particular by overloading the long-term energy store 15 to avoid.

The 3rd shows a schematic representation of the on-board energy supply system 11 of the mobile harbor crane 1 according to the second embodiment described above. The second embodiment differs from that in FIG 2nd described embodiment essentially in that an on-board primary energy source as the primary energy source 14 that are part of the on-board power supply system 11 instead of an external primary energy source 13 is used. The onboard primary energy source 14 can in particular comprise a diesel-electric drive. The mobile harbor crane 1 has no connection for an external primary energy source 13 on. Between the onboard primary energy source 14 and the control unit 17a there is a signal connection 18th , via which the on-board primary energy source 14 can be controlled so that the energy required for the energy consumer system 20th provided. This is done through the electrical connections 19th from the onboard primary energy source 14 to the energy consumer system 20th , especially through the control system 17th , a current flow causes. It is not a recovery of energy from the consumer system 20th into the onboard primary energy source 14 intended. Otherwise, the explanations apply 2nd analogously for those in 3rd shown embodiment.

The 4th shows a schematic representation of the on-board energy supply system 11 of the mobile harbor crane 1 according to the third embodiment described above. These In terms of its components, the embodiment essentially corresponds to a combination of those in FIGS 2nd and 3rd described embodiments. Some special features regarding the operating modes of the third embodiment are described below.

As soon and as long as the external primary energy source 13 is available and accordingly the mobile harbor crane 1 The control and regulation system is operable in normal operation 17th the use of this energy source to supply the drives of the energy consumer system 20th and to charge the long-term energy storage 15 in front. If the external primary energy source 13 is not available, there is the control system 17th the use of the onboard primary energy source 14 to supply the drives of the energy consumer system 20th and to charge the long-term energy storage 15 before, with the mobile harbor crane here too 1 is operable in normal operation.

In the auxiliary mode, the control and regulation system leaves 17th an energy supply for the drives of the energy consumer system 20th both through the onboard primary energy source 13 as well as through the long-term energy storage 15 to. If the charge level of the long-term energy storage 15 the control system does not suffice 17th the onboard primary energy source 14 for the energy supply of the drives of the energy consumer system 20th in front. The control and regulation system 17th can also be designed so that, if and as long as the mobile harbor crane 1 located in a port area where the operation of the onboard primary energy source 14 , in particular a diesel-electric drive thereof, is not desired or not permitted, and the charge level of the long-term energy store 15 for the energy supply of at least some of the drives of the energy consumer system 20th sufficient, the energy supply of the drives of the energy consumer system 20th through the long-term energy storage 15 automatically specifies. Alternatively, the specification can also be made manually by the crane operator.

If one of the two primary energy sources fails 13 or 14 can be the other primary energy source 13 or 14 for the energy supply of the drives of the energy consumer system 20th used, thus ensuring normal operation of the mobile harbor crane.

If the first, external primary energy source fails 13 and the second onboard primary energy source 14 , takes over the long-term energy storage 15 mandatory in emergency operation I or emergency operation II the required energy supply of at least some of the drives of the energy consumer system 20th . The charge of the long-term energy storage 15 takes place in normal operation via the on-board crane power network 12th through the external primary energy source 13 or the onboard primary energy source 14 or by regenerative feeding from one or more of the drives.

Reference list

1

Mobile harbor crane

2nd

Undercarriage

3rd

Superstructure

4th

tower

5

boom

6

landing gear

7

Kai

8th

Support device

9

Counterweight

10th

Roller head

11

on-board power supply system

12th

on-board crane power network

13

external primary energy source

14

on-board primary energy source

15

Long-term energy storage

16

connection

17th

Control and regulation system

17a

Control unit

17b

Control unit

18th

Signal connection

19th

electrical connection

20th

Energy consumer system

d

Slewing gear

D

Axis of rotation

w

Seesaw

W

Seesaw axis

H

Hoist

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• WO 2011/098542 A1 [0002]
• US 7554278 B2 [0003]

Claims (10)

Mobile harbor crane (1) with an undercarriage (2) and a chassis (6) attached to it with a support device (8), an upper carriage (3), a slewing gear (d) connecting the upper carriage (3) with the undercarriage (2), one Jib (5), a luffing mechanism (w) connecting the jib (5) to the superstructure (3), and a lifting mechanism (h), the mobile harbor crane (1) having an on-board energy supply system (11) for supplying drives to the undercarriage (6 ), the support device (8), the slewing gear (d), the luffing gear (w) and the lifting gear (h) with electrical energy, the drives in normal operation of the mobile harbor crane (1) with the required electrical energy from a primary energy source ( 13; 14) are supplied, wherein the electrical energy is transmitted via an on-board crane power network (12) present in the on-board energy supply system (11), characterized in that the on-board energy supply system (11) is used for an auxiliary operation and / or an N Emergency operation I and / or an emergency operation II of the mobile harbor crane (1) has a long-term energy store (15) in order to operate at least some of the drives (6; 8th; d; w; h) to supply the required electrical energy via the on-board crane electricity network (12) through the long-term energy store (15) instead of through the primary energy source (13; 14). Mobile harbor crane (1) after Claim 1 , characterized in that the long-term energy store (15) is designed and set up in such a way that, in auxiliary operation and / or in emergency mode I, the long-term energy store (15) supplies the drives of the undercarriage (6), the support device (8) with energy. , the slewing gear (d), the luffing gear (w) and the lifting gear (h) is ensured so that at least the main crane functions driving and steering the undercarriage (6), supporting the support device (8), rotating the slewing gear (d), Rocking of the luffing gear (w) and lifting and lowering of the lifting gear (h) can be used. Mobile harbor crane (1) after Claim 1 or 2nd , characterized in that the long-term energy store (15) is designed and set up in such a way that in emergency operation II, at least the energy supply for the drive of the undercarriage (6) and / or the drive of the hoist (h) by means of the long-term energy store (15) is ensured so that at least the main crane functions of driving and steering the undercarriage (6) and / or lowering the lifting mechanism (h) can be used, in particular placing a load in a controlled manner and / or the mobile harbor crane (1) out of the work area and / or the danger area can be pulled out. Mobile harbor crane (1) according to one of the preceding claims, characterized in that the on-board energy supply system (11) comprises a control and regulation system (17) which, in auxiliary operation, supplies the drives of the undercarriage (6), the support device (8) alone, of the slewing gear (d), the luffing gear (w) and the lifting gear (h) with electrical energy through the long-term energy store (15) and / or in emergency operation I the sole supply of the drives of the undercarriage (6), the support device (8 ), the slewing gear (d), the luffing gear (w) and the lifting gear (h) with electrical energy the long-term energy store (15) is mandatory and / or in emergency mode II the supply of the drive of the undercarriage (6) and / or Drive of the hoist (h) with electrical energy is assigned to the long-term energy store (15) and is preferably limited to this. Mobile harbor crane (1) after Claim 4 , characterized in that the control and regulation system (17) in auxiliary operation and / or in emergency operation I only allows the long-term energy store (15) to be discharged up to a predetermined lower charge threshold, in particular in order to provide the required energy in a possible emergency operation II To be able to provide. Mobile harbor crane (1) after Claim 4 or 5 , characterized in that the control and regulation system (17) in emergency mode II allows the long-term energy store (15) to be discharged even below the predetermined lower charge threshold. Mobile harbor crane (1) according to one of the preceding claims, characterized in that the long-term energy store (15) is charged via the on-board crane power network (12) by the primary energy source (13; 14) used in normal operation. Mobile harbor crane (1) according to one of the preceding claims, characterized in that the on-board energy supply system (11) can be connected to an external primary energy source (13), in particular a port electricity network, by a connection (16) present in the on-board crane power network (12). Mobile harbor crane (1) according to one of the preceding claims, characterized in that the on-board energy supply system (11) has an on-board primary energy source (14), in particular a diesel-electric drive. Mobile harbor crane (1) according to one of the preceding claims, characterized in that the long-term energy store (15) at least a rechargeable battery, preferably a Li-ion battery.

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